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  • 05:55 Popular Chladni plates & mechanical driver- cheap! // Homemade Science with Bruce Yeany

    Chladni plates & mechanical driver- cheap! // Homemade Science with Bruce Yeany

    738 views / 0 likes - added

    The use of Chladni plates can make a wonderful demonstration but can be rather expensive for equipment that may have limited use in the average classroom. This video shows how I set up the experiment using a free online tone generator on my computer, a di

  • 02:09 Popular How Does A Turntable Work?

    How Does A Turntable Work?

    716 views / 0 likes - added

    240 precision built parts and two interlocking zinc alloy spinning platters work in unison to play crisp tunes. The stylus sits on an arm that vibrates a copper coil that helps generate an electrical current to power the mini amplifier. Machines: How They

  • 06:53 Popular Transistors, How do they work ?

    Transistors, How do they work ?

    1,174 views / 0 likes - added

    Dear friends, Please support us at Patreon, so that we can continue our free educational service https://www.patreon.com/LearnEngineering The invention of transistors revolutionized human civilization like no other technology. This video demonstrates work

  • 04:48 Popular Homemade speaker made with a toy motor /// Homemade Science with Bruce Yeany

    Homemade speaker made with a toy motor /// Homemade Science with Bruce Yeany

    978 views / 4 likes - added

    This homemade speaker uses a toy motor instead of a coil of wire and a magnet.The amplifier wires are simply attached to a toy motor to make it vibrate. Use it to make a conductor speaker that only you can hear or attach it to a paper plate to make a simp

  • 08:53 Why Are There So Many Movie Theater Formats? | Movies Insider

    Why Are There So Many Movie Theater Formats? | Movies Insider

    465 views / 0 likes - added

    Between Dolby Cinemas, IMAX, RealD 3D, and Regal RPX there are a lot of ways to watch a movie. And some movies like The Lion King are released in all of them. But which of these premium formats is better? Well, it depends on you and on the movie. If you w

  • 12:58 How a Crystal Radio Works

    How a Crystal Radio Works

    479 views / 0 likes - added

    Full details of how a crystal radio works, right down to the electron level. We start with a demonstration of all the parts in action, showing how the radio waves interact with the antenna and antenna coil to produce a fluctuating magnetic field, which in

  • 04:59 Visualizing Ultrasound with Schlieren Optics Part I

    Visualizing Ultrasound with Schlieren Optics Part I

    288 views / 0 likes - added

    Part 1 of 3. We use a schlieren optics system with a strobing light source to visualize ultrasonic waves emitted by a transducer driven at a frequency of 28 kHz.Images employing schlieren optics are very sensitive to changes in the density of air. Since s

  • 21:03 How To Make A Crystal Radio - No Batteries

    How To Make A Crystal Radio - No Batteries

    421 views / 0 likes - added

    How to make a robust crystal radio. DIY step by step. No special tools or skills needed. Most parts can be had from recycled things. The purchased parts run about $3. Good during power failures, when batteries are not available, for prepping and similar.

  • 10:33 TELEVISION: HOW IT WORKS 1952 CORONET INSTRUCTIONAL FILM CATHODE RAY TUBE ORTHICON XD39134

    TELEVISION: HOW IT WORKS 1952 CORONET INSTRUCTIONAL FILM CATHODE RAY TUBE ORTHICON XD39134

    235 views / 0 likes - added

    Want to support this channel and help us preserve old films? Visit https://www.patreon.com/PeriscopeFilm Visit our website www.PeriscopeFilm.com This black-and-white educational film from 1952, “Television: How it Works” was created with educa


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